Home / 20,685.69-28,544.49-11,734.65

Finding the Fourth Proportional to 20,685.69, 28,544.49 and 11,734.65

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Solution

The fourth proportional to 20,685.69, 28,544.49 and 11,734.65 is: 16,192.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,685.69 : 28,544.49 = 11,734.65 : x
  2. Step 2: Convert to fraction form
    20,685.69/28,544.49 = 11,734.65/x
  3. Step 3: Cross multiply
    20,685.69x = 28,544.49 × 11,734.65
  4. Step 4: Simplify right side
    20,685.69x = 334,959,599.58
  5. Step 5: Solve for x
    x = 334,959,599.58/20,685.69
  6. Step 6: Final answer
    x = 16,192.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.